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Motion: Chapter 9
Term | Definition |
---|---|
Motion | The state in which one object’s distance from another is changing. |
Reference Point | A place or object used for comparison to describe the position or motion of a person or object. |
Distance | The length of a path between two points. |
Displacements | The length and direction of a straight line between starting and ending. |
Vector | A measurable quantity that consists of both a magnitude and a direction. |
Scalar | A measurable quantity that consists only magnitude. |
Speed | The distance an object travels per unit of time. |
Velocity | Speed in a given direction. |
Acceleration | The rate at which velocity changes. |
Energy | The ability to do work or cause change. |
Kinetic Energy | Energy that an object has due to its motion. |
Potential Energy | Stored energy that results from the position or shape of an object. |
Gravitational Energy | Potential energy related to an object’s height. |
Elastic Energy | The energy of stretched or compressed objects. |
Mechanical Energy | An object’s combined kinetic energy and potential energy. |
Conservation of Energy | A principle stating that energy cannot be created or destroyed, but can be altered from one object to another. |
Work | Force exerted on an object that causes it to move. |